Hi. I have messed something up. I have Adobe Acrobat Pro XI with regular updates. When I create a pdf from scanner in any format other than black and white, I get this grayish blue haze behind the content. I am sure it is not my scanner itself, because scanning directly to Photoshop works just fine. Besides, I also get it when I try to convert some (not all) Word documents to pdfs. So, I have clearly screwed up something in my Acrobat settings, but I don't know what. The weird color shows up both in a digital pdf and when I try to print the pdf.